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java.lang.Objectorg.apache.zookeeper.server.quorum.FastLeaderElection
public class FastLeaderElection
Implementation of leader election using TCP. It uses an object of the class QuorumCnxManager to manage connections. Otherwise, the algorithm is push-based as with the other UDP implementations. There are a few parameters that can be tuned to change its behavior. First, finalizeWait determines the amount of time to wait until deciding upon a leader. This is part of the leader election algorithm.
Nested Class Summary | |
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static class |
FastLeaderElection.Notification
Notifications are messages that let other peers know that a given peer has changed its vote, either because it has joined leader election or because it learned of another peer with higher zxid or same zxid and higher server id |
static class |
FastLeaderElection.ToSend
Messages that a peer wants to send to other peers. |
Constructor Summary | |
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FastLeaderElection(QuorumPeer self,
QuorumCnxManager manager)
Constructor of FastLeaderElection. |
Method Summary | |
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QuorumCnxManager |
getCnxManager()
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long |
getLogicalClock()
Returns the current vlue of the logical clock counter |
Vote |
lookForLeader()
Starts a new round of leader election. |
void |
shutdown()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public FastLeaderElection(QuorumPeer self, QuorumCnxManager manager)
self
- QuorumPeer that created this objectmanager
- Connection managerMethod Detail |
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public long getLogicalClock()
public QuorumCnxManager getCnxManager()
public void shutdown()
shutdown
in interface Election
public Vote lookForLeader() throws java.lang.InterruptedException
lookForLeader
in interface Election
java.lang.InterruptedException
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